Sugar-Free Keto Lemon Curd (Easy!)

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You’ll want to put this keto lemon curd on just about anything. It’s incredibly light and refreshing, full of flavor, and the perfect addition to your favorite keto desserts like ice cream, cheesecake, and even just whipped cream for a super simple and sweet creamy sugar-free lemon curd dessert.

For the smoothest lemon curd, the sweetener makes a huge difference! That’s why this recipe uses Besti Monk Fruit Allulose Blend. It dissolves effortlessly into the lemon curd, so it’s never gritty — with no added net carbs!

Get Besti For This Recipe Here

Is Lemon Curd Keto?

Regular lemon curd is not keto (so much sugar), but this easy low carb lemon curd is keto friendly! Each tablespoon serving has just 1/2 gram of net carbs.

Why You’ll Love This Sugar-Free Lemon Curd Recipe

Light and sweet with tart lemon taste
Luxuriously smooth texture
Made with just 4 ingredients
Only 10 minutes total time
Just 0.5 grams net carbohydrates per serving

Ingredients You’ll Need

This section explains how to choose the best ingredients for keto-friendly lemon curd, what each one does in the recipe, and substitution options. For measurements, see the recipe card below.

Butter – Use unsalted.
Lemons – You’ll need about 3-4 whole lemons, as we’re using both fresh lemon juice and zest.
Egg Yolks – Using the yolks only gives this lemon curd a luxurious texture. Make sure they are at room temperature before you begin. Save the whites and make a keto lemon meringue pie or keto bread!
Best Monk Fruit Allulose Blend – The best way to have all the sweetness of sugar without the sugar and carbs. Unlike other sweeteners (including erythritol and other brands of monk fruit sweetener), Besti dissolves completely and won’t crystallize, which is why it’s the only one I recommend for this sugar-free lemon curd recipe. It’s also fine to use Besti Powdered — both versions dissolve easily.
Sea Salt – To balance the sweetness.

How To Make Keto Lemon Curd

This section shows how to make sugar-free lemon curd, with step-by-step photos and details about the technique, to help you visualize it. For full instructions, including amounts and temperatures, see the recipe card below.

Melt butter. Add butter to a saucepan and melt over low heat, then remove from heat.
Add remaining ingredients. Stir in lemon juice, egg yolks, Besti, lemon zest, and salt.

Lemon curd base in saucepan next to bag of Besti.

Reduce. Return mixture to medium-low heat and whisk continuously until the sugar-free lemon curd thickens.

Thickened sugar free lemon curd in saucepan next to bag of Besti.

Storage Instructions

Store: Keep this sugar-free lemon curd in the fridge for 1-2 weeks.
Freeze: For long-term storage, keep lemon curd in the freezer for up to 1 year.

How To Use Sugar-Free Lemon Curd

There are a number of ways to use sugar-free lemon curd:

Fold it into keto whipped cream for a light and bright keto dessert.
Serve over keto vanilla ice cream.
Spread on your favorite keto toast, almond flour pancakes, or a keto English muffin.
Dollop onto slices of keto cheesecake.
Use as a filling for low carb vanilla cake.
Add a special touch to a berry ricotta dessert.
Top keto pancakes or almond flour waffles.
Enjoy right off the spoon!

Spoon scooping keto lemon curd out of a jar.

More Lemon Keto Recipes

If you like this easy keto lemon curd recipe, you might also like some of thee other lemon keto recipes:

Keto Lemon Cake

Keto Lemon Bars

Lemon Pound Cake

Low carb keto zucchini bread recipe with blueberries and lemon wedges.

Keto Lemon Blueberry Zucchini Bread

Recommended Tools

Saucepan – Just the right size for a batch of this recipe.
Glass Jars – Store this keto lemon curd recipe in glass mason jars for easy storage.

Sugar-Free Keto Lemon Curd Recipe

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Ingredients

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1/2 cup Unsalted butter ▢
1/2 cup Lemon juice (about 3-4 lemons) ▢
6 large Egg yolks (at room temperature) ▢
3/4 cup Besti Monk Fruit Allulose Blend ▢
1/2 tbsp Lemon zest ▢
1/4 tsp Sea salt ▢

Instructions

Tap on the times in the instructions below to start a kitchen timer while you cook.

In a medium saucepan over low heat, melt the butter. Remove from heat.
Add lemon juice, egg yolks, Besti, lemon zest, and salt. Stir together.
Return saucepan to low-medium heat on stove and whisk continuously for 3-5 minutes, until the mixture thickens.

Last Step: Leave A Rating!

Rate this recipe

Share your recipe picture by tagging @wholesomeyum and hashtag it #wholesomeyum on Instagram, or in our free low carb support group, too – I’d love to see it!

Recipe Notes

Serving size: 1 tablespoon

Nutrition Facts

Amount per serving. Serving size in recipe notes above.

Calories 58

Fat 6g

Protein 1g

Total Carbs 0.6g

Net Carbs 0.5g

Fiber 0.1g

Sugar 0.3g

Nutrition facts are provided as a courtesy. Have questions about calculations or why you got a different result? Please see our nutrition policy.

Course: Dessert

Cuisine: British

Keywords: keto lemon curd, sugar-free lemon curd

Calories: 58 kcal

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45 Comments

Amy Hunter
0 April 12, 2023Reply

This called for 1/2 cup of butter. Is that correct? I feel like that was way too much. I’ve seen other recipes that at the most called for 5 tablespoons.
- Wholesome Yum D
  0 April 13, 2023Reply
  
  Hi Amy, This is the correct amount of butter.
Nancy Onque
0 March 18, 2023Reply

I made this recipe and followed it exactly, but it has a metallic taste. Any suggestions?
- Wholesome Yum D
  0 March 21, 2023Reply
  
  Hi Nancy, I’m not sure why that would have happened. Did you use Besti Monk Fruit Allulose Blend?
Sandy
0 January 10, 2023Reply

We cook with lemon curd all the time, and now I have a delicious KETO option. Thank you!
Shelby
0 January 10, 2023Reply

I have officially now put this lemon curd on everything! It’s so tasty and it’s so far worked on cookies, overnight oats, and my morning oatmeal hehe.
Vit
0 January 10, 2023Reply

It was a perfect match to the vanilla ice cream 🙂 I’m a big fan of ice cream, so I made this sugar free lemon curd since there is already so much sugar in ice cream.
Margaret G
0 January 3, 2023Reply

How do you keep monk fruit from crystallizing in your recipe?
- Wholesome Yum D
  0 January 3, 2023Reply
  
  Hi Margaret, Did you use Besti Monkfruit Allulose Blend?
Audra
0 October 14, 2022Reply

Does this curd recipe crystalize when chilled? I have made others with different sugar substitutes and get varying levels of crystallization that needs warming to smooth out the crunch. I love my lemon curd.
Thank you in advance.
- Maya | Wholesome Yum
  0 October 15, 2022Reply
  
  Hi Audra, Using Besti it will not crystallize at all. 🙂
Maggie
0 September 26, 2022Reply

So so good! I followed your recipe and it turned it perfectly!
Hayley Dhanecha
0 September 26, 2022Reply

Keto lemon curd turned out so good. So refreshing, delicious, and guilt-free! Thanks for the recipe.
Sharon
0 September 25, 2022Reply

This lemon crud is so easy to make and has just the right balance of sweet and citrus. Great for topping yogurt with.
Katie Crenshaw
0 September 25, 2022Reply

Oh wow! This lemon curd is bursting with flavor! It is such a lovely treat without the sugary guilt!
Erin
0 September 25, 2022Reply

This curd looks amazing! I’m amazing you could make it keto. Can’t wait to try!
Lauren Michael Harris
0 September 25, 2022Reply

So glad that I found this recipe! I love lemon curd but have been cutting back on sugar. This was perfect!
Mikayla
0 September 22, 2022Reply

Tried this and a keto pancake recipe and wow it was really great together. Thank you, love a fruit topping that I do not feel guilty eating.
Heidy
0 September 22, 2022Reply

Sugar-free lemon curd is now a NEW FAVORITE OF MINE! How can you go wrong being Suger-free and Keto? It was so refreshing and delicious tasting. This is a keeper recipe that I will be making again!
Nancy
0 September 22, 2022Reply

I have a big bag of monkfruit sweetener and now I know exactly what to do with it. The lemon curd looks mouthwatering.
Patricia Farrell
0 June 26, 2022Reply

Excellent instructions my grandchildren love it and it turned out really good and tastes great. Thank you Patricia
Sue
0 June 16, 2022Reply

Is there a recipe for a CRISP Cookie? All that I find are actually soft style. I love lemon and would like a recipe for a low carb crisp lemon cookie. I thought of mixing a grated cheese with a sweetener and lemon zest and lemon flavor – kind of like they make cheese crackers, but I’m not confident formulating a recipe. Any ideas? It would certainly help keep me on low carb.
- Wholesome Yum D
  0 June 17, 2022Reply
  
  Hi Sue, I currently don’t have any recipes like that but I will add it to my list to experiment.
Agnes
0 May 24, 2022Reply

I’ve never made homemade lemon curd before- didn’t realize it was this simple! I’ll have to try this the next time I make baked blueberry oatmeal bars, I love putting lemon curd on top of it!
Jessica
0 May 24, 2022Reply

This was absolutely FABULOUS! By far my new favorite treat to have in the summer. Thank you!
Sheila G
0 May 24, 2022Reply

The BEST!! I can eat this with a spoon but I also love it on top of muffins!
Pamela Ebertz
0 May 1, 2022Reply

Could I can this recipe? Instead of keeping it in the refrigerator?
- Maya | Wholesome Yum
  0 May 17, 2022Reply
  
  Hi Pamela, Yes, I think you can, but I have not tried it.
Marcia
0 April 7, 2022Reply

Can I use powdered stevia?
- Maya | Wholesome Yum
  0 May 17, 2022Reply
  
  Hi Marcia, I don’t recommend stevia as it has an aftertaste. Also, pure stevia doesn’t have the bulk/volume that Besti does, and if you use a stevia blend, these typically don’t dissolve properly.
Tami Proctor
0 March 5, 2022Reply

Lemon Curd is one of my favorites! Thank you for the recipe it’s delicious!
Lana McQuown
0 February 20, 2022Reply

I made this curd to go with a lemon meringue chaffle. It was delicious with the perfect balance of sweet and tartness. I can’t believe how easy it was to make. I can see it being used it all kind of other recipies. Thanks for creating such wonderful recipes.
- Loreto and Nicoletta
  0 September 25, 2022Reply
  
  Hi Maya, this is a great take on lemon curd with a keto twist!👍👌❤️ Great tip on sweetness to use and this curd is so versatile, however, one of my favorites is lemon meringue! Thanjs for sharing!❤️❤️🥰👍
Barbara
0 January 6, 2022Reply

If I use less monk fruit, will that affect consistency?
- Maya | Wholesome Yum
  0 January 12, 2022Reply
  
  Hi Barbara, It might, I haven’t tried that!
Nancy
0 June 7, 2021Reply

Hi Maya! This looks delicious! I’m ready to try this after having gathered about a dozen fresh lemons from my friends’ tree in California! Quick question: how would straight liquid monk fruit work? I like this because it’s cleaner and there’s no issue with grittiness or fiber at all. Have you tried this option at all?
- Maya | Wholesome Yum
  0 June 11, 2021Reply
  
  Hi Nancy, We don’t recommend a liquid sweetener in this recipe, as it would be too runny. There is no fiber in Besti.
Dee
0 April 8, 2021Reply

About how long will the Lemon Curd keep in the fridge?
- Maya | Wholesome Yum
  0 May 17, 2022Reply
  
  Hi Dee, It will keep in the fridge for 1-2 weeks.
Terra
0 April 8, 2021Reply

Hi Maya! Appreciate the email today about Fruity keto recipes for spring and plan on making both the sorbet and lemon curd. May be a dumb question, but wondering if straining the seeds out (for diverticulosis) would change the macros from keto to low carb since I’d be removing fiber? Also, while I can figure out how to swap other berries, what would you suggest to make lemon or lime sorbet or sherbet. Thanks for all you do!!
- Maya | Wholesome Yum
  0 April 8, 2021Reply
  
  Hi Terra, Straining out seeds would remove fiber, but it would also remove the component of total carbs contributed by the fiber, so the net carbs should stay about the same. We haven’t experimented with a lemon or lime sorbet yet.
Laurie S Burke-Deutsch
0 March 1, 2021Reply

Can this recipe be made thick enough to use as a pie filling? Thank you. This sight is fantastic!!!
- Maya | Wholesome Yum
  0 March 3, 2021Reply
  
  Hi Laurie, It’s a little thin for a pie filling. You can see a modified version used for this keto lemon meringue pie recipe.
Nellie Tracy
0 November 25, 2020Reply

This is a great lemon curd recipe! So delicious!
Britni
0 November 25, 2020Reply

I still can’t believe this is sugar free, it was soooo good! I’ll never use a regular lemon curd recipe again!